CN216180088U

CN216180088U - Adjustable chain wrench

Info

Publication number: CN216180088U
Application number: CN202121904669.5U
Authority: CN
Inventors: 李云辉
Original assignee: Hebei Xinda Iron and Steel Group Co Ltd
Current assignee: Hebei Xinda Iron and Steel Group Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-04-05
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses an adjustable chain wrench, which comprises a chain, a clamping plate, an adjusting rod and a sleeve; the adjusting rod penetrates through and is in threaded connection with the sleeve; the clamping plate is rotatably connected to the front end of the adjusting rod; limiting rings are arranged on two sides of the clamping plate; one end of the chain is fixedly connected to the sleeve, and the other end of the chain penetrates through one limiting ring forwards and then penetrates through the other limiting ring backwards to be fixedly connected with the sleeve. The chain wrench is in threaded connection with the sleeve through the adjusting rod and in rotating connection with the clamping plate, and the clamping plate can be pushed to move forwards through rotating the adjusting rod; the both ends of chain pass two spacing rings respectively and all with the sleeve rigid coupling, when cardboard moves forward again, the sleeve can stimulate the both ends of chain for the chain length of cardboard front end shortens. The chain wrench pulls the chain when pushing the clamping plate forward, can quickly and effectively adjust the tightness degree of the clamping hoop, and has the characteristics of simple structure, convenient operation, large meshing force, large torque, wide applicable pipe diameter range and the like.

Description

Adjustable chain wrench

Technical Field

The utility model relates to a wrench, in particular to an adjustable chain wrench.

Background

The chain wrench is widely applied to the disassembling and fastening work of cylindrical parts, and the common chain wrench is clamped on the wrench by means of a shaft which protrudes from each section of the chain, and the parts are driven to rotate by utilizing the friction force between the chain and the parts. When the chain type spanner works, the non-hinged end of the chain is free and is not fixed or hinged with the spanner handle, the clamping and the rotation of the pipe fitting are realized by the friction force between the pipe fitting and the chain wound around the pipe fitting, the torque force is generated by the meshing force of the partial cone at the front end of the spanner handle and the chain, and the spanner handle has no force application point on the surface of the pipe fitting. Therefore, the chain type wrench can clamp and rotate the metal pipe fitting without generating bite marks and damaging the surface of the pipe fitting.

Because each section of the chain is of a fixed length, the circumferential sizes of different cylindrical components are different, the length of the chain section of the integer and the circumferential length of the cylindrical component have a certain difference, if the difference between the length of the chain section of the integer and the circumferential length of the cylindrical component is large, the friction force between the chain and the cylindrical component is reduced, and the component is difficult to detach. And because the non-articulated end of chain is free not fixed with the spanner handle, there is not enough, the condition that non-articulated end drops in use of moment of torsion.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a convenient and reliable adjustable chain wrench.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the device comprises a chain, a clamping plate, an adjusting rod and a sleeve; the adjusting rod penetrates through and is in threaded connection with the sleeve; the clamping plate is rotatably connected to the front end of the adjusting rod; limiting rings are arranged on two sides of the clamping plate; one end of the chain is fixedly connected to the sleeve, and the other end of the chain penetrates through one limiting ring forwards and then penetrates through the other limiting ring backwards to be fixedly connected with the sleeve.

The two sides of the limiting ring are rotatably connected with rollers or idler wheels.

The front end face of the clamping plate is provided with a clamping screw die.

The rear end of the adjusting rod is provided with an adjusting handle.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: according to the utility model, the adjusting rod is in threaded connection with the sleeve and is in rotational connection with the clamping plate, so that the clamping plate can be pushed to move forwards by rotating the adjusting rod; the both ends of chain pass two spacing rings respectively and all with the sleeve rigid coupling, when the cardboard moved forward again, the sleeve can stimulate the both ends of chain for the chain length of cardboard front end shortens, can utilize the chain of cardboard and front end like this to cramp metal pipe fitting or the nut that needs to dismantle (screw up), rotate the sleeve and can dismantle. The clamp plate is pushed forwards, the chain is pulled at the same time, the tightness degree of the clamp can be quickly and effectively adjusted, and the clamp plate has the characteristics of simple structure, convenience in operation, large meshing force, large torque, wide applicable pipe diameter range and the like.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the stop collar of the present invention;

FIG. 3 is a schematic top view of the stop collar of the present invention;

FIG. 4 is a schematic view of the connection structure of the chucking plate and the adjusting lever of the present invention.

In the figure: a chain 1; a clamping plate 2; an adjusting rod 3; a sleeve 4; an adjustment handle 5; a stop collar 6; a clamping screw die 7; a drum 8; a connecting shaft 9; a limiting plate 10; a connecting head 11; an annular projection 12.

Detailed Description

As shown in fig. 1, the adjustable chain wrench comprises a chain 1, a clamping plate 2, an adjusting rod 3 and a sleeve 4. The sleeve 4 is of a cylindrical structure with two open ends, and internal threads are arranged in the sleeve 4; said internal threads are preferably arranged in the sleeve 4 at its inner front end and at its inner rear end. Adjust pole 3 and be round rod-shaped structure, adjust pole 3 and pass inside sleeve 4, and be equipped with one section external screw thread in sleeve 4 position that is equipped with the internal thread, the cooperation through internal thread and external screw thread will be festival pole 3 threaded connection on sleeve 4 like this.

As shown in fig. 1 and 4, the clamping plate 2 of the adjustable chain wrench is a plate-shaped structure, preferably an arc-shaped plate-shaped structure with a forward arc center; the middle part of the rear end of the clamping plate 2 is provided with a cylindrical connecting groove, and the rear part of the connecting groove is provided with an inward annular bulge 12; the front end of the adjusting rod 3 is provided with a cylindrical connector 11, and the rear end of the connector 11 is provided with an annular groove; the connector 11 is inserted in the spread groove, the annular bulge 12 is embedded in the annular groove, so that the adjusting rod 3 can be rotatably connected through the matching of the connector 11 and the spread groove, and the front and the rear limiting connection is realized through the matching of the annular bulge 12 and the annular groove. After adopting such structure, rotate adjusting lever 3, adjust lever 3 and can move forward or backward for sleeve 4 to drive cardboard 2 and move forward or backward.

As shown in fig. 1, 2 and 3, two sides of the clamping plate 2 of the adjustable chain wrench are provided with limiting rings 6; each limiting ring 6 consists of a limiting plate 10, a connecting shaft 9 and a roller 8; the number of the limiting plates 10, the connecting shaft 9 and the roller 8 of each limiting ring 6 is two; the two limit plates 10 are fixedly connected to the side parts of the clamping plates 2 in parallel; the two sides of the two limiting plates 10 are both connected with connecting shafts 9, and each connecting shaft 9 is rotatably connected with a roller 8. The roller 8 can also adopt other structures with shafts rotatably connected between the limiting plates 10, for example, two ends of the roller 8 extend out to form a central shaft, and the central shaft is rotatably connected between the limiting plates 10. The limiting ring 6 can also adopt other structures, and only two sides are rotationally connected with a roller 8 or a roller. Two ends of the chain 1 respectively penetrate through the two limiting rings 6 backwards, and then two ends of the chain 1 are fixedly connected with the front part of the sleeve 4. After the structure is adopted, when the clamping plate 2 moves forwards or backwards relative to the sleeve 4, the chain 1 can be limited by the limiting ring 6, and only the chain 1 is allowed to pass through the limiting ring 6; and the roller 8 is rotatably connected with the two sides of the limiting ring 6, so that the chain 1 can pass through the limiting ring 6 more smoothly.

As shown in fig. 1, a clamping die 7 is arranged on the front end face of the clamping plate 2 of the adjustable chain wrench, and is used for being matched with a chain 1 to clamp and clamp a metal pipe fitting or a nut to be disassembled (screwed). The rear end of the adjusting rod 3 is provided with an adjusting handle 5 for rotating the adjusting rod 3.

As shown in fig. 1, the use process of the adjustable chain wrench is as follows: sleeving a metal pipe fitting or a nut to be disassembled (screwed) between the chain 1 and the clamping plate 2; the sleeve 4 is held by hand, the adjusting handle 5 is screwed by hand, and the adjusting rod 3 is pushed to move forwards by utilizing the threaded connection of the adjusting rod 3 and the sleeve 4; the forward adjusting rod 3 drives the clamping plate 2 to move forward, and meanwhile, the chain 1 continuously penetrates through the limiting ring 6 backwards; the chain 1 at the front end of the clamping plate 2 is continuously shortened, and a ring enclosed by the chain 1 and the clamping plate 2 is continuously reduced; thus, the chain 1 and the clamping plate 2 gradually clamp and clamp the metal pipe fitting or the nut; and the adjusting handle 5 is stopped to be screwed, and the sleeve 4 is rotated, so that the metal pipe fitting or the nut can be unscrewed or screwed. The adjusting handle 5 is reversely screwed, and the hooped metal pipe fitting or the nut can be taken out of the chain wrench.

Claims

1. An adjustable chain spanner, its characterized in that: the device comprises a chain (1), a clamping plate (2), an adjusting rod (3) and a sleeve (4); the adjusting rod (3) penetrates through and is in threaded connection with the sleeve (4); the clamping plate (2) is rotatably connected to the front end of the adjusting rod (3); limiting rings (6) are arranged on two sides of the clamping plate (2); one end of the chain (1) is fixedly connected to the sleeve (4), and the other end of the chain passes through one limiting ring (6) forwards and then passes through the other limiting ring (6) backwards to be fixedly connected with the sleeve (4).

2. The adjustable chain wrench as claimed in claim 1, wherein: and the two sides of the limiting ring (6) are rotatably connected with a roller (8) or a roller.

3. The adjustable chain wrench as claimed in claim 1, wherein: and a clamping screw die (7) is arranged on the front end face of the clamping plate (2).

4. An adjustable chain wrench as claimed in claim 1, 2 or 3, wherein: the rear end of the adjusting rod (3) is provided with an adjusting handle (5).